Fig. 3. Representative histological photos of livers after 270 days consecutive zinc dietary supplementation (200× magnification). (A) Female control group; (B) Zn ion female group; (C) ZnO-NP female group; (D) ZnO-MP female group; (A′) male control group; (B′) Zn ion male group; (C′) ZnO-NP male group; (D′) ZnO-MP male group.
